most powerful attack

[Viewtifulboy]

what is the most powerful attack you've seen in a videogame?

[not famy]

uhhh water gun in pogeyman

[Commander Awesome]

Hien Messhoujin!, Presea's ultimate move.
Absolutely deadly, it hits so darn hard that nearly nothing can stand againsnt it.

[Rayquarian]

It was a long time ago since I played Golden Sun, but I remember this very powerful summon.  I think it was Charon (the person who sails across the imaginary River Styx).

[yes.derek]

<sup>I think it's called Pirate's Wrath, it's an attack that Vyse from Skies of Arcadia: Legends does.

It pretty much blows up the fjorkin' world.</sup>

[Bowser81889]

The Master Sword does some pretty massive damage. :P

[Syncopathic]

Horn Drill from pokemon

[Jono2]

inb4falcawnpawnch

[yes.derek]

inb4falcawnpawnch

^{ah i 4got!}

[えっちーせんぱい]

I don't know why ask me.

[…]

Magikarp use your splash attack

[bluaki]

MAGIKARP used SPLASH!
It's a one-hit KO!

[bluaki]

Magikarp use your splash attack

Aw... you beat me to it :'(

[Max Headroom]

<sup>I think it's called Pirate's Wrath, it's an attack that Vyse from Skies of Arcadia: Legends does.

It pretty much blows up the fjorkin' world.</sup>

If it's what I remember it being, that wasn't very much,

[Termanian_Knight]

Felix's sword lets out a howl!
Felix uses Meggido!!!

It was a long time ago since I played Golden Sun, but I remember this very powerful summon.  I think it was Charon (the person who sails across the imaginary River Styx).

Oh yeah, that was pretty sweet. If you beat Dullahan, you get to summon Iris, who is more uber pwnsome (she throws your enemies into a super nova, and then fully heals/ revives your party; what more could you want? :P).

Fo serious tho, Disgaea/2 takes the cake on damage totals.